You may not know it to look at him, but there was once a time when Post Malone was tattoo free! In fact, it was his pal, Justin Bieber, who inspired his first ink.

"I was always so scared to get one and then I got one,” the 23-year-old rapper admitted on Monday’s Tonight Show Starring Jimmy Fallon.

It all started when his debut album, Stoney, was in the works.

"We were working on Stoney, and then we had a tattoo artist come through, and I was like, 'You know what? Justin Bieber’s got some tatts, and I love you, but I know I’m way tougher than you,'” he quipped of the 24-year-old pop star.

Post Malone and Justin Bieber backstage during 2018 Coachella Valley Music And Arts Festival Weekend 1 at the Empire Polo Field on April 14, 2018 in Indio, California.

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Noting that his first body art was of a Playboy bunny, Post said that the ink was only there for a short time before Bieber accidentally ruined it.

"I guess Justin was watching this interview in the future when I said I was tougher than him ‘cause we played basketball like two days later and he knocked the whole thing off,” he said of the bandage covering the tattoo. “It was just blood dripping down my hand. It kind of looks like my tattoo got dropped in lava, but I like the story anyways.”

In April, Bieber shared some of his own tattoos on Instagram, writing, “If tattooed didn’t hurt, everyone would have them. Well, maybe not [everyone]!! Over a hundred hours of [hard] work on my body and I wouldn’t take back a single one.. I ABSOLUTELY LOVE ART AND I'VE Made my body a canvas and it’s SO MUCH FUN.”